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UNITED STATES PATENT OFFICE.

JAMES W. CAMPBELL, OF NEW YORK, N. Y.

ADJUSTABLE WINDOW-CORNICE.

SPECIFICATION formingpart of Letters Patent No. 225,339, dated March 9,1880.

Application led February 2, 1880.

To all whom it may concern:

Be it known that I, JAMES W. CAMPBELL, of the city of New York, in thecounty and State of New York, have invented certain new and usefulImprovements in Adjustable Win-` dow-Cornices, of which the following isa specification.

Various means have been employed to render window-cornices adjustable inlength, so

as to tit windows of different sizes without cutting. In some cases thetwo sections of which the cornice is composed are united by a centerpiece which extends at the front and back sufficiently, in a directionlengthwise of' the cornice, to give sufficient strength to the cornice,and in which the two sect-ions may be adjusted toward and from eachother.

The object of my invention is to furnish a cornice in which the twoadjustable sections or parts are united together so as to slide towardand from each other, and be properly supported and self-sustainingwithout` the aid of the center piece. l

To this,end my invention consists in a cornice the two adjustablesections of which are each provided at the back with a rigidextension-piece, which overlaps the other section and engages with theother extension-piece in such manner that while either extension-pieceis Afree to slidefreely upon the other in adj ustirng the two sections,each is prevented from moving laterally or vertically relatively to theother. sion-pieces are preferably ton guedand grooved upon their meetingfaces, and each extensionpiece carries a gib or bracket engaging withthe other extension-piece, for precludin g their movement transverselyto each other. The center piece is so constructed that it embraces thesections of the cornice and their extensions, and may be adj ustedthereon.

In the accompanying drawings, Figure 1 represents a back view of acornice embodying my invention, showing the same in its contractedposition. Fig. 2 represents a similar view, showing the corniceextended; and Fig. 3 represents a cross-section thereof on the dottedline x or, Fig. 2.

Similar letters of reference designate correspending parts in all thefigures.

A A designate the two adjustable sections To eti'ect this engagement theexten.

of which the cornice is composed, which are exactly similar in shape,and the front of which presents any molding or combination of moldings.Each of said sections has extending from it and rigidly attached to itan extension-piece, the extension-piece B extending from the lower partof the section A, and the extension B extending from the upper part ofthe section A', parallel with the extensionB. These two extension-piecesare so clamped or secured together, side by side, that while they arefree to slip one upon` the other in parallel lines they cannot be movedtransversely to each other. As here represented, their meeting edges aretongued or grooved, the extension-piece B havin g atongue, c, and theextension-piece B having a groove, b. By this tongue and groove each ofthe two adjustable sections A A is prevented from being moved`transversely in a horizontal direction relatively to the other.

In order to prevent movement in a vertical direction and hold the twoextension-pieces in tight face-to-face contact, I employ lugs orbrackets C, one of which is fixed to the end of each ot the twoextension-pieces, and is provided with a tongue, c, which engages with agroove, d, in the edge of the extensionpiece.

D designates the center piece lof the cornice, the inner surface ofwhich is fitted approximately to thel buter face or front of the twoadjustable sections, and is held upon the said adj ustable sections by abracket, E, which embraces the back, top, and bottom of the adjustablesections, andis represented as secured to the center piece by screws c.

When the cornice is contracted to its shortest length the inner ends ofthe adjustable sections A A abut against the bracket E of the centerpiece, and are precluded from further movement, the center piece beingheldcentrallybetween them.

When the cornice is extended to its utmost length the stops f, which aresecured upon the extension-pieces, come in contact with the bracket E ofthe center-piece, as represented in Fig. 2, and preclude the furtherextension of the cornice, the center piece being held centrally betweenthe said stops.

When the cornice is adjusted to any inter- IOO mediate length betweenits two extreme points the center piece may be readily adjusted alongthe cornice to a central position.

This cornice may be very quickly adjusted, as all that is required is toslip the two sections together or draw them apart and to adjust thecenter-piece centrally between or upon them.

By my invention l produce a cornice in which the two adjustable sectionsare connected independently of the center piece, so asto hold them intheir proper relative position and be self-sustaining, and in which thecenter piece may be adjusted without aiecting its strength.

What I claim as my invention, and desire to secure by Letters Patent, is

l. An adjustable window-cornice the two sections of which are eachprovided with a rigid extension-piece which overlaps the other sectionand engages with the other extensionpiece in such manner that while theeXtension-pieces are free to slide one upon the other to effect theadjustment of the cornice they are prevented from moving transverselyrel atively to each other, substantially as specified.

2. rlhe combination, with the two adjustable sections A A', of the twoextension-pieces B B', tongue'd and grooved upon their meeting ets C,for holding them in engagement onewith another, the center piece, D,secured upon the cornice by the bracket E, and stops f, for limiting themovement ofv the sections A A', substantially as specified.

JAMES W. CAMPBELL.

Witnesses FREDK. HAYNES, E. P. J EssUP.

